'Total return is the amount of value an investor earns from a security over a specific period, typically one year, when all distributions are reinvested. Total return is expressed as a percentage of the amount invested. For example, a total return of 20% means the security increased by 20% of its original value due to a price increase, distribution of dividends (if a stock), coupons (if a bond) or capital gains (if a fund). Total return is a strong measure of an investmentâ€™s overall performance.'

Which means for our asset as example:- Compared with the benchmark SPY (62.6%) in the period of the last 5 years, the total return of -5.9% of iShares 10-20 Year Treasury Bond ETF is lower, thus worse.
- Compared with SPY (32.1%) in the period of the last 3 years, the total return, or performance of -15.8% is smaller, thus worse.

'Compound annual growth rate (CAGR) is a business and investing specific term for the geometric progression ratio that provides a constant rate of return over the time period. CAGR is not an accounting term, but it is often used to describe some element of the business, for example revenue, units delivered, registered users, etc. CAGR dampens the effect of volatility of periodic returns that can render arithmetic means irrelevant. It is particularly useful to compare growth rates from various data sets of common domain such as revenue growth of companies in the same industry.'

Applying this definition to our asset in some examples:- Looking at the annual return (CAGR) of -1.2% in the last 5 years of iShares 10-20 Year Treasury Bond ETF, we see it is relatively smaller, thus worse in comparison to the benchmark SPY (10.2%)
- During the last 3 years, the compounded annual growth rate (CAGR) is -5.6%, which is lower, thus worse than the value of 9.7% from the benchmark.

'Volatility is a rate at which the price of a security increases or decreases for a given set of returns. Volatility is measured by calculating the standard deviation of the annualized returns over a given period of time. It shows the range to which the price of a security may increase or decrease. Volatility measures the risk of a security. It is used in option pricing formula to gauge the fluctuations in the returns of the underlying assets. Volatility indicates the pricing behavior of the security and helps estimate the fluctuations that may happen in a short period of time.'

Using this definition on our asset we see for example:- Looking at the volatility of 11.9% in the last 5 years of iShares 10-20 Year Treasury Bond ETF, we see it is relatively lower, thus better in comparison to the benchmark SPY (21.5%)
- Looking at 30 days standard deviation in of 14.2% in the period of the last 3 years, we see it is relatively smaller, thus better in comparison to SPY (24.8%).

'Risk measures typically quantify the downside risk, whereas the standard deviation (an example of a deviation risk measure) measures both the upside and downside risk. Specifically, downside risk in our definition is the semi-deviation, that is the standard deviation of all negative returns.'

Which means for our asset as example:- The downside volatility over 5 years of iShares 10-20 Year Treasury Bond ETF is 8.3%, which is lower, thus better compared to the benchmark SPY (15.6%) in the same period.
- Compared with SPY (17.9%) in the period of the last 3 years, the downside deviation of 10% is lower, thus better.

'The Sharpe ratio (also known as the Sharpe index, the Sharpe measure, and the reward-to-variability ratio) is a way to examine the performance of an investment by adjusting for its risk. The ratio measures the excess return (or risk premium) per unit of deviation in an investment asset or a trading strategy, typically referred to as risk, named after William F. Sharpe.'

Which means for our asset as example:- The ratio of return and volatility (Sharpe) over 5 years of iShares 10-20 Year Treasury Bond ETF is -0.31, which is lower, thus worse compared to the benchmark SPY (0.36) in the same period.
- During the last 3 years, the Sharpe Ratio is -0.57, which is lower, thus worse than the value of 0.29 from the benchmark.

'The Sortino ratio, a variation of the Sharpe ratio only factors in the downside, or negative volatility, rather than the total volatility used in calculating the Sharpe ratio. The theory behind the Sortino variation is that upside volatility is a plus for the investment, and it, therefore, should not be included in the risk calculation. Therefore, the Sortino ratio takes upside volatility out of the equation and uses only the downside standard deviation in its calculation instead of the total standard deviation that is used in calculating the Sharpe ratio.'

Applying this definition to our asset in some examples:- The excess return divided by the downside deviation over 5 years of iShares 10-20 Year Treasury Bond ETF is -0.45, which is smaller, thus worse compared to the benchmark SPY (0.5) in the same period.
- Looking at downside risk / excess return profile in of -0.81 in the period of the last 3 years, we see it is relatively lower, thus worse in comparison to SPY (0.4).

'The ulcer index is a stock market risk measure or technical analysis indicator devised by Peter Martin in 1987, and published by him and Byron McCann in their 1989 book The Investors Guide to Fidelity Funds. It's designed as a measure of volatility, but only volatility in the downward direction, i.e. the amount of drawdown or retracement occurring over a period. Other volatility measures like standard deviation treat up and down movement equally, but a trader doesn't mind upward movement, it's the downside that causes stress and stomach ulcers that the index's name suggests.'

Applying this definition to our asset in some examples:- Compared with the benchmark SPY (8.52 ) in the period of the last 5 years, the Ulcer Ratio of 13 of iShares 10-20 Year Treasury Bond ETF is higher, thus worse.
- Looking at Ulcer Ratio in of 17 in the period of the last 3 years, we see it is relatively greater, thus worse in comparison to SPY (10 ).

'A maximum drawdown is the maximum loss from a peak to a trough of a portfolio, before a new peak is attained. Maximum Drawdown is an indicator of downside risk over a specified time period. It can be used both as a stand-alone measure or as an input into other metrics such as 'Return over Maximum Drawdown' and the Calmar Ratio. Maximum Drawdown is expressed in percentage terms.'

Which means for our asset as example:- The maximum DrawDown over 5 years of iShares 10-20 Year Treasury Bond ETF is -38.2 days, which is lower, thus worse compared to the benchmark SPY (-33.7 days) in the same period.
- Compared with SPY (-33.7 days) in the period of the last 3 years, the maximum drop from peak to valley of -38.2 days is lower, thus worse.

'The Drawdown Duration is the length of any peak to peak period, or the time between new equity highs. The Max Drawdown Duration is the worst (the maximum/longest) amount of time an investment has seen between peaks (equity highs) in days.'

Which means for our asset as example:- Looking at the maximum time in days below previous high water mark of 592 days in the last 5 years of iShares 10-20 Year Treasury Bond ETF, we see it is relatively greater, thus worse in comparison to the benchmark SPY (235 days)
- Compared with SPY (235 days) in the period of the last 3 years, the maximum time in days below previous high water mark of 592 days is greater, thus worse.

'The Drawdown Duration is the length of any peak to peak period, or the time between new equity highs. The Avg Drawdown Duration is the average amount of time an investment has seen between peaks (equity highs), or in other terms the average of time under water of all drawdowns. So in contrast to the Maximum duration it does not measure only one drawdown event but calculates the average of all.'

Which means for our asset as example:- Compared with the benchmark SPY (55 days) in the period of the last 5 years, the average time in days below previous high water mark of 184 days of iShares 10-20 Year Treasury Bond ETF is larger, thus worse.
- During the last 3 years, the average days below previous high is 246 days, which is larger, thus worse than the value of 59 days from the benchmark.

Historical returns have been extended using synthetic data.
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- Note that yearly returns do not equal the sum of monthly returns due to compounding.
- Performance results of iShares 10-20 Year Treasury Bond ETF are hypothetical, do not account for slippage, fees or taxes, and are based on backtesting, which has many inherent limitations, some of which are described in our Terms of Use.